Derek Mitchell, US ambassador to Myanmar, said recently that the US Embassy in Yangon that America was keeping a close watch on efforts to change the 2008 Constitution.
If 20 per cent of MPs support the bill, Parliament will have to continue to discuss it. The ruling Union Solidarity and Development Party has already secured approval for the proposed bill from 20 per cent of MPs.
Thura Shwe Mann, the Speaker of Parliament, also set out the timetable for holding a referendum on the constitutional amendment in May.